Carbonating mixing valve



June 27, 1933. L F DAWSON 1,915,718

CARBONATING MIXING VALVE Filed Sept. 22, 1931 fg L I 2f Il /6' f Z ff Za E y 4/ I .32 i f f S7/ a I i Il r I /3'/ 55 l I /2 f I l' n IH IH/vanto@ f5 JfIawso-rz 'y MW :"f/f

Patented June` 1 933 l ,915,7

UNirED STATES PATENT OFFICE F. DAWSON, F GALVESTON, TEXAS, ASSIGNOR TO TRIPLE,XXX COMPANY,

A CORPORATION 0F TEXAS' CARBONATING MIXING VALVE Application filed September 22, 1931. Serial No. 564,397.

r1`his invention relates to improvements in thoroughly mixed before passing to the concarbonating devices and pertains particulartrol or draw-off faucet which is connected in ly to an improved gas and water mixing the usual manner thereto, valve. The structure 2y is shown and described in The primary object of the present invendetail in the co-pending application, Serial 55 tion is to provide an improved valve structure No. 530,706 fil-ed April 16th, 1931, therefore, for automatically admitting gas and water to a detailed description of the same in the` presthe carbonating device when the draft arm ent case will not be made, except to point out with which the same is coupled, is open for that the device includes a casing 3 to the the extraction of carbonated water therefrom. upper end of which is connected a lead-oil' u0- Another object of the invention is to pro- Coupling 4 with which a pipe is connected to vide a mixing valve for thepurpose set fo-rth carry the carbonated water to a control valve which is actuated by the pressure of the water or draft arm and the lower end has a couin the pipe line connected thereto and which pling 5 connected therewith which is joined has a, Water actuated valve plug directly conwith the mixing valve 1 through the medium 65" nected with a gas inlet control valve so that of the nipple 6 and elbow coupling 7. the sticking of any of the parts cannot occur. The mixing valve 1 comprises an elongated A still further object of the invention is to chambered body 8 in the lower end of which provide a water pressure controlled mixing is threadably secured the removable plug 9.

valve having a novel gas inlet lcontrolling Within the body 8 there is formed the reduced '10 valve element and a novel means for regulatcentral portion 10 in the passage 11 of which ing the quantity of gas admitted thereis normally positioned the Water actuated through. f valve plug 12 the construction of which will- The invention will be best understood from. hereinafter be more specifically described.

' a consideration of the following detailed de- By the formation of the reduced central por- 75`vr scription taken in connection with the accomtion 10 which is normally closed by the valve panying drawing forming part of this speciplug 12 there are thus formed the two chamtication, with the understanding, however, bers 13 and 14. The chamber 13 will hereinthat the invention is not confined to any strict after be referred to as the water chamber and conformity with the showing of the drawing the chamber 14 will be referred to as the dist0- but may be changed or modified so long as charge or outlet chamber. suoli changes or modifications mark no ma- The body of the member 8 is provided terial departure from the salient features of with a laterally threaded outlet nipple 15 the invention as expressed in the appended with vwhich the coupling 7 kis connected and` claims. which communicates with `the outlet chamber 8a In the drawing 14 in the manner illustrated.

kFigure 1 is a view partly in vertical section The upper end of the body 8 has a reduced and partly in side elevation of the improved extension 16 formed integral therewith which structure embodying the present' invention; is separated from the water chamber 13 by 40 Figure 2 is a bottom vplan view of one of the dividing wall17 through which is formed 90 the water actuated plugs in the valve struca passage which at its upper end is threaded ture. f as indicated at 18, while its lower end is of Referring now more particularly to the reduced diameter thus forming a shoulder 19. drawing wherein like numerals of reference The extension 16 is hollow as shown and indicate corresponding parts throughout the forms a gas receiving chamber 16 into which 95 several views, the numeral lfkindicates generr` gas is discharged through the coupling 20 ally the present improved mixing valve while which has one end detachably secured in the the numeral 2 indicates as avwhole the carlaterally opening nipple 21. The top of the bonating element with which the valve is extension 16 which forms the gas chamber or connected and in which the .gas and waterk are cylinder is closed by the threaded plug 22 l0 through which a passage is formed which receives a plug 23 in its upper' end.

Leading laterally through the wall. ot the body 8 into the water chamber 18 is a nipple 241 with which is coupled a one-way or check valve unit 25 which permits water to flow only into the chamber 13, this valve being designed to have a water supply line coupled therewith.

Disposed in and extending longitudinally through the water chamber 13 is a tube 26, the upper end of which is enlarged as indicated at 27' so as to rest upon the shoulder 19 and thus support the tube in position in the manner shown. Extending downwardly through the plug 23 is a stem 28 which has its upper end threadably connected with the plug 23 whileat a point substantially midway between its ends there are formed therethrough the transverse passages 29 which lead into the axial passage or bore 30 which eftcnds dowi'iwardly and througl'i the lower end ofthe stem.

The transverse or inlet passages 29 are located within the gas receiving chamber 16 and thelower end ot' the stem extends downwardly through a packing nut 31 which is located in the threaded upper portion ot the wall 17, into the upper end ot the tube 26, terminating therein just above the outlet apertures 32 which are formed through the wall ot this tube.

rlhe water actuated valve plug 12 which is slidably mounted in the passage 11 which is termed through the reduced portion 10 of the body, normally closes this passage and has secured thereto and extending upwardly therefrom the valve needle 33, the pointed Lipper end et which extends into and closes the lower end of the bore 30 in the stem 28. The lower part ot the valve plug'12 is of a diameter to snugly lit in the passage 11 and it will thus be seen that when this plug is forced downwardly this snugly iitting portion will pass beyond 'he lower end ot the passage 11 and thus permit water to escape from the chamber 13 into the chamber 14. The underside ot' the plug 12 is provided with a stem 34 about which engages the upper end et a coiled spring 35 which has its lower end rested upon the plug` 9 and surrounding or receiving a stem 86 which is carried by and extends upwardly from this plug. rlhis spring, as will be readily apparent, maintains the valveplug 12 in its proper position in the passage between the chambers 13 and 14.

Leading troni the top ot the water receiving chamber 13 into and through the wall of the body 8, is a by-pass passage 37 which leads to the opposite side ot the reduced portion 1() and opens into the outlet chamber 14. i

In the operation ot the present valve communication is made between the gas container and the nipple 21 through the medium of the coupling 2O while a water supply pipe is connected with the inlet side of the check valve 25. When the pressure within the body 2 is reduced below the pressure behind the water entering the valve 25, the water will flow through this valve into the chamber 13 and force the valve plug 12 downwardly against the tension ot the spring The downward movement of the plug 12 will remove the n point of the valve needle 13 from the outlet end of the bore 30 in the stem 28, thus allow ing gas to pass `from the chamber 1G through the stem and through the apertures 32 i the sleeve 26, into the water chamber 13. rlhe water and gas will thus pass by the plug 12 into the lower or outlet chamber 14 from which they will pass into the device 2 where athorough agitation will be given the water as it passes, to effectively dissolve the gas therein. As will be readily apparent as soon as the pressure within the structure 2 equalizes the water and gas pressure the spring 35 will restore the plug 12 to its former position in the passage 11 thereby reinserting the point ot the valve needle 33 in the bore 30 and thus closing olf the discharge of any more gas into the water chamber. By providing the by-pass 37 the trapping of gas in the upper part of the chamber is prevented and the valve plug thus permitted to return to its normal position.

By the adjustment of the stem 28 the distance which the valve plug and nipple 33 are required to move in order to open the passage 11, may be readily regulated, thereby regulating the quantity oit gas allowed to enter the water chamber 13.

From the foregoing description it will be readily apparent that the gas controlling valve must always move with the water actuated valve plug and therefore the possibility of the gas controlling the valve becoming stuck and remaining open is avoided and the efficiency ott the mixing valve as a whole is accordingly increased. A

Having thus described the invention, what is claimed is 1. A mixing Valve of the character described comprising a body having a pair of chambers therein each havingv an inlet, a centrally bored stem leading from one of said chambers into and terminating in the other and having each end opening into a chamber, a valve needle reciprocablymounted in one of said chambers for movement longitudinally of said stem 'and normally having its pointed end positioned in the said terminal end of the stem, an outlet for said last mentioned chamber, a valve plug normally closing said outlet andconnected with and adapted to move in the same path as said needle, and spring means normally maintaining said valve plug and needle in predetermined positions.

2. A mixing valve ot the character described comprising a body having a pair of llo rfa

chambers ytherein Veach 1having, an inlet, a centrally bored stem leading from one of said chambers into and terminatingiin therother and having each end opening into a chamber, a valve needle reciprocably mounted in one of said chambers 'for movement longitudinally ot said stem and normally having its pointed end positionedinthe said terminal end of the. stem, an outleticor said last men-- tioned chamber, a valve plug normally-closing said outlet and connected with and adapted to move in the same path ils-said needle, spring meansnorznally maintaining said valve plug and needle in predetermined positions, and means for adjusting said stem longitudinally for controlling the distance which the valve plug must move to open position.

3. A mixing valve of the character described comprisihg aA body having three aligned chambers therein, one terminal chamber constituting an outlet chamber, a longitudinal shiltable stem extending through the other terminal chamber and into the intermediate chamber, saidstem having a bore opening at the inner end of the stem into the intermediate chamber and opening intermediate the ends ot the stem into the said other terminal chamber, a passage communicating between the outlet chamber and theV intermediate chamber, a plug valve reciprocably mounted in rsaid passage, a valve needle coupled with said plug valve and having its pointed end closing the inner end of said stem, spring means normally controlling said valve plug` and needle, and inlet means for said intermediate and second mentioned terminal chambers.

4l. A mixing valve of the character described comprising a body having three aligned chambers therein, one terminal chamber constituting an outlet chamber, a. longitudinally shiftable stem extending through the other terminal chamber and into the intermediate chamber, said stemhzwing a bore opening at the inner end of the stem into the intermediate chamber and opening intermediate the ends of the stem into the said other terminal chamber, a passage communi- .cating between the outlet chambe1 and the intermediate chamber, a plug valve reciprocably mounted in said passage, a valve needle coupled with said plug valve and having its pointed end elosng the inner end of said stem,

i spring means normally controlling said valve chamber, inlet means lfor the other terminal chamber and the intermediate chamber, i a tube secured at one end in a passage between the intermediate chamber and the said other terminal chamber and terminating at its other end in the intermediate chamber and further having apertures through the wall thereof leading to the intermediate chamber, a longitudinally'adjustable stem extending through thesaid othervterminal chamber into said. tube and having a central boreopcning at one end in the tube andhaving its other end in communication with the interior of the said other terminal chamber, a valve needle slidably mounted in said tube and having its pointed end normally closing said bore, a valve plug reciprocably mounted in a passage communicating between the outlet chamber and the intermediate chamber and having connection with said valve needle, spring means normally retaining said valve plug in one position, and a by-pass passage communieating at one end with said intermediate chamber and at its other end with said outlet chamber, said sleeve inlet apertures being uncovered by the pointed end ofthe valve needle.

6. A carbonating device, comprising an elongated body having three aligned chambers therein constituting gas, water and discharge chambers, there vbeing communicate ing passages between the outer gas and discharge chambers and the central water chamber, inlet means for said water chamber and gas chamber and an outlet for the discharge chamber, a stem adjustably secured at one end in the gas chamber and extendingy through the adjacent communicating passage into the water chamber, said stem having a bore formed therein from the water chamber end and opening laterally into the gas chamber, a sleeve secured at one end in the body between the gas and water chambers and having said stem extended thereinto, said sleeve having lateral apertures in the wall opening into the water chamber, a reeiprocable plug valve mounted in the passage between the water and discharge chambers, a needle valve carried by the plug and yextending into said sleeve and closing the open end of said stem passage, spring means in the discharge chamber yurging said plug valve and said needle valve to closed osition, and a check valve controlling the inlet to the water chamber.

7 In a mixing valve, a body having a gas chamber and a liquid chamber each having an inlet, a valve controlling afcommunicating passage between said chambers including a seat and a seat engaging member, an outlet for the liquid chamber, valve means operating to open said outlet upon the reduction of the pressure upon the outer side thereof below the pressure in the liquid chamber, said valve seat engaging member being moved from its seat by and with said means when the latter is opened, and means for shifting said seat relative to the member whereby the distance moved therefrom by the said member may be regulated.

'5 8. A carbonating device, comprising a body having a gas and a water chamber, inlets to said chambers, a tubular stem extending from one chamber into the other and terminating at one end in the water chamber,

there being a communicating passage between the interior of the stem and the gas chamber, a needle valve reoiprocably positioned in the Water chamber and having its point entering the adjacent end of the tubular In testimony whereof I hereunto aiX my Y signature.

JAMESl F. DAWSON. 

